in commander when someone quits without conceding, and their commander is on the battlefield, it stays there. as soon as someone board wipes, the game freezes because it's trying to ask the guy who left if he wants to move his commander to the command zone.

When Cherished Hatchling dies, you can cast Dinosaurs with Flash but the fight ability never works.It looks like the Fight ability gets put on the stack when the Dinosaur is cast , but not when it enters the battlefield.